Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net Income	$ 433,680	$ 1,048,910
Stock-based compensation expense	120,571	117,856
(Gain) Loss on sale of facilities	(887,477)	693,818
Gain on sale of other fixed assets		(3,288)
Depreciation and amortization	302,000	291,266
Deferred tax expense	(331,548)	62,432
Bad debt provision	(13,431)	(1,354)
Accounts receivable	727,364	806,140
Costs and estimated earnings in excess of billings on uncompleted contracts	(1,564,252)	(1,918,798)
Inventories, net	(293,825)	259,811
Other current assets	40,437	(445,368)
Billings in excess of costs and estimated earnings on uncompleted contracts	(430,359)	(1,368,189)
Accounts payable and accrued expenses	(192,298)	302,512
Deferred revenue	43,150	(1,077,553)
Net cash used in operating activities	(2,045,988)	(1,231,805)
Cash flows from investing activities:
Capital expenditures	(1,475,181)	(7,724,948)
Proceeds from sale of other fixed assets		21,500
Deposits	500	141,757
Net cash provided by/(used in) investing activities	2,145,218	(5,979,368)
Cash flows from financing activities:
Net proceeds from stock options exercised	17,700	57,683
Proceeds from long-term debt		6,000,000
Payments of long-term debt	(2,677,334)	(385,534)
Net cash (used in)/provided by financing activities	(2,659,634)	5,672,149
Net decrease in cash and cash equivalents	(2,560,404)	(1,539,024)
Cash and cash equivalents at beginning of period	13,721,324	18,136,527
Cash and cash equivalents at end of period	11,160,920	16,597,503
Income taxes paid	25	329,725
Interest paid	99,663	88,612
Smithtown Ave. facility [Member]
Cash flows from operating activities:
(Gain) Loss on sale of facilities	(887,477)
Cash flows from investing activities:
Proceeds from sale of facilities	3,619,899
Marconi Ave.facility [Member]
Cash flows from operating activities:
(Gain) Loss on sale of facilities		693,818
Cash flows from investing activities:
Proceeds from sale of facilities		$ 1,582,323